Detachable shoe for endless tracks



Aug. 5 192%,

. s. SPRINGER DETACHABLE SHOE FOR ENDLESS TRACKS Filed May 11, 1921 Invenar B S. firinyar Patented Aug. 5, i924.

RUSSELL S. SPRINGER, OFBTOCKTONI; CALIFORNIA, ASSIGNOR TO THE HOLT MANU FACTURING COMPANY, OF STOCKTON, CALIFORNIA, A CORPORATION OF CALI- sonata DETAG'EAIBLE SHOE FOR ENDLESS TRACKS.

Application filed May 11, 1921. Serial no. 468,525.

To all whom it may concern:

Be it known that I, RUSSELL S. SPRINGER, a citizen of the United States, residing at Stockton, in the county of San Joaquin and State of California, have invented new and useful Improvements in Detachable Shoes for Endless Tracks, of which the'following is a specification. I

This invention relates to endless chain tracks and more particularly to a detachable shoe therefor.

Endless chain tracks customarily are provided with permanent shoes having rough or irregular tread surfaces to better engage the ground. The rough tread shoes are more or less destructive to artificial road- Ways and many localities have forbidden operation of such traction devices over paved highways. In and by the present invention, I provide a detachable shoe to fit over the irregular permanent shoe and provided with a smooth tread and having means for, quickly and easily attaching the same in place. One form which my invention may assume is exemplifiedin the following description and illustrated in the accompanying drawing in which Fig. 1 shows a central, vcrtica sectional view through a portion of a t; ick equipped with detachable shoes embodying my invention. Fig. 2 shows a bottom view of the same. Fig. 3 shows a transverse, sectional view through one of the links with the permanent and detachable shoe in place thereon.

I have illustrated a portion of a conventional chain track, which-as Well knownis made up of a series of articulated links. each link including spaced side bars 10. Arranged upon the longitudinal edges of these side bars is a. permanent shoe 11, which may be made either integral with the side bars or connected thereto by means of bolts 12. This permanent shoe. as herein shown. is provided with longitudinally extending corrugations forming a central concavity 13 and a convex portion 14 at either side thereof. .The endsof these shoes are turned upwardly as shown at'15.

'] claim and desire to A detachable shoe 16 is provided for the permanent shoe. a smooth tread surface, and is made of a width sufficient to bridge the concavity 13' One end of the detachable shoe is turned upwardlyand provided with a hook 17, and the opposite end carries a hook bolt 18 passing through a ledge 19 and held in place by a nut 20.

To apply the detachable shoe, the hook-v shaped end 17 is fitted over the turned up end 15 of the permanent shoe, and the opposite ends then moved into place, and the hook bolt 18 adjusted so as to fit over the adjacent end of the permanent shoe. Thereafter, by turning down the nut 20, the parts can be clamped tightly in position. To further assist in preventing displacement of the detachable shoe, I provide projections 21 on the inner face thereof to engage the sides of the ribs 14. These projections may be formed by indenting the metal of which the shoe is formed.

Various changes may be made in the con struction and arrangement of the several parts herein shown and described without departing from the spirit of my invention,

as disclosed in the appended claims.

Having thus described my invention, What secure by Letters Patent is 1. An endless chain track having a permanent shoe formed with a corrugation on its tread surface GXiGlldlD" from end to end of the shoe transversely of the track, athin, relatively light detachable shoehaving a comparatively Hat tread surface to fit be tween the ridges of the corrugations on the This detachable shoe has permanent shoe and extending throughout the length t-hereof and bridging the space between the ridges. a hook at. one end of the detachable shoe to fit over the edge of the permanent shoe and quick detachable means carried at opposite end of the detachable shoe for connecting the same to the permanent shoe. I V

2. An endless chain track having a permanent shoe formed with a corrugation on Q moeeu its tread surface extending from end to end of the shoe transversely of the track, a detachable shoe having a, comparatively fiat tread surface to fit between the ridges of 1 the corrugation on the permanent shoe and extending throughout the iength thereof, projections on the inner surface of the detachable shoe engaging said ridges to prevent iaterai movement between the parts and fastening means at the opposite ends 10 of the detachable shoe for connection with the ends of the permzmentshoe.

eeseem s. SPRINGER. 

